• Flange Screws for Automotive and Machinery

Flange Screws

Buy Flange Screws online at South Coast Fasteners and get fast shipping. These fasteners provide a connection by distributing load over a larger surface area, making them suitable for many applications in Automotive, Construction, HVAC, Marine & Offshore, and Food & Beverage industries.

Flange Screws in Stock with Strong Pricing and Fast Shipping

Flange Screws are used wherever secure, consistent fastening matters. Pairing with Finished Hex Nuts and Flat Washers helps complete the assembly.

South Coast Fasteners provides stocked inventory with competitive pricing and fast shipping, and contact us if you need help selecting the right products or placing your order.

 Product Name
Part Number
Diameter
  1
Thread Pitch
Length
Thread
Material
Finish
 
flangescrews 3/8" 16 1 1/4" (FT) Coarse Grade 5 Zinc Cr+3
flangescrews 3/8" 16 1 1/2" (FT) Coarse Grade 5 Zinc Cr+3
flangescrews 3/8" 16 1 3/4" (FT) Coarse Grade 5 Zinc Cr+3
flangescrews 3/8" 16 2" (FT) Coarse Grade 5 Zinc Cr+3
flangescrews 3/8" 16 2 1/2" (FT) Coarse Grade 5 Zinc Cr+3
flangescrews 3/8" 16 3" (FT) Coarse Grade 5 Zinc Cr+3
flangescrews 3/8" 16 3/4" (FT) Coarse Grade 8 Black Phosphate & Oil
flangescrews 3/8" 16 1" (FT) Coarse Grade 8 Black Phosphate & Oil
flangescrews 3/8" 16 1 1/4" (FT) Coarse Grade 8 Black Phosphate & Oil
flangescrews 3/8" 16 1 1/2" (FT) Coarse Grade 8 Black Phosphate & Oil
flangescrews 3/8" 16 1 3/4" (PT) Coarse Grade 8 Black Phosphate & Oil
flangescrews 3/8" 16 2" (PT) Coarse Grade 8 Black Phosphate & Oil
flangescrews 3/8" 16 2 1/4" (PT) Coarse Grade 8 Black Phosphate & Oil
flangescrews 3/8" 16 2 1/2" (PT) Coarse Grade 8 Black Phosphate & Oil
flangescrews 3/8" 16 2 3/4" (PT) Coarse Grade 8 Black Phosphate & Oil
flangescrews 3/8" 16 3" (PT) Coarse Grade 8 Black Phosphate & Oil
flangescrews 3/8" 16 4" (PT) Coarse Grade 8 Black Phosphate & Oil
flangescrews 3/8" 16 3/4" (FT) Coarse Grade 8 Zinc Bake Cr+6
flangescrews 3/8" 16 1" (FT) Coarse Grade 8 Zinc Bake Cr+6
flangescrews 3/8" 16 1 1/4" (FT) Coarse Grade 8 Zinc Bake Cr+6
Showing 81-100 of 335 Results
Diameter: 3/8"
Thread Pitch: 16
Length: 3/4" (FT)
Thread: Coarse
Material: Grade 8
Finish: Black Phosphate & Oil
View Details
Diameter: 3/8"
Thread Pitch: 16
Length: 1" (FT)
Thread: Coarse
Material: Grade 8
Finish: Black Phosphate & Oil
View Details
Diameter: 3/8"
Thread Pitch: 16
Length: 1 1/4" (FT)
Thread: Coarse
Material: Grade 8
Finish: Black Phosphate & Oil
View Details
Diameter: 3/8"
Thread Pitch: 16
Length: 1 1/2" (FT)
Thread: Coarse
Material: Grade 8
Finish: Black Phosphate & Oil
View Details
Diameter: 3/8"
Thread Pitch: 16
Length: 1 3/4" (PT)
Thread: Coarse
Material: Grade 8
Finish: Black Phosphate & Oil
View Details
Diameter: 3/8"
Thread Pitch: 16
Length: 2" (PT)
Thread: Coarse
Material: Grade 8
Finish: Black Phosphate & Oil
View Details
Diameter: 3/8"
Thread Pitch: 16
Length: 2 1/4" (PT)
Thread: Coarse
Material: Grade 8
Finish: Black Phosphate & Oil
View Details
Diameter: 3/8"
Thread Pitch: 16
Length: 2 1/2" (PT)
Thread: Coarse
Material: Grade 8
Finish: Black Phosphate & Oil
View Details
Diameter: 3/8"
Thread Pitch: 16
Length: 2 3/4" (PT)
Thread: Coarse
Material: Grade 8
Finish: Black Phosphate & Oil
View Details
Diameter: 3/8"
Thread Pitch: 16
Length: 3" (PT)
Thread: Coarse
Material: Grade 8
Finish: Black Phosphate & Oil
View Details
Diameter: 3/8"
Thread Pitch: 16
Length: 4" (PT)
Thread: Coarse
Material: Grade 8
Finish: Black Phosphate & Oil
View Details
Diameter: 3/8"
Thread Pitch: 16
Length: 3/4" (FT)
Thread: Coarse
Material: Grade 8
Finish: Zinc Bake Cr+6
View Details
Diameter: 3/8"
Thread Pitch: 16
Length: 1" (FT)
Thread: Coarse
Material: Grade 8
Finish: Zinc Bake Cr+6
View Details
Diameter: 3/8"
Thread Pitch: 16
Length: 1 1/4" (FT)
Thread: Coarse
Material: Grade 8
Finish: Zinc Bake Cr+6
View Details

Types of Flange Screws

Grade 5 Hex HD Serrated Flange Screw, Zinc CR+3

These medium-strength screws provide secure fastening with built-in washers for better load distribution. The zinc CR+3 finish ensures corrosion resistant, making them good for automotive, machinery, and structural use.

Grade 8 Indented Hex Flange Screw (Frame Bolt), Black Phosphate & Oil

Designed for high-strength automotive and structural applications, these Grade 8 bolts feature a black phosphate and oil coating for mild corrosion protection and smooth assembly. Commonly used in vehicle frames and suspension systems.

Grade 8 Indented Hex Flange Screw (Frame Bolt), Zinc Yellow CR+6 Bake

These high-tensile fasteners offer improved corrosion protection with a yellow zinc CR+6 baked finish. Good for heavy equipment, truck assembly, and industrial machinery where strength and durability are essential.

Stainless 18-8 Hex Head Serrated Flange Screw with Wax

Made from 18-8 stainless steel, these screws combine corrosion resistant with a serrated flange for vibration resistant. The wax coating aids in installation, good for outdoor, marine, and food-grade environments.

Flange Screws Material Options

South Coast Fasteners stocks flange screws in material grades selected for strength, corrosion resistant, and application-specific reliability.

Grade 5

These medium carbon steel screws are heat-treated to provide solid strength and reliability in general manufacturing, machinery assembly, and automotive work. Grade 5 is a dependable, everyday solution when you need a screw that can handle torque, shock, and long-term use.

Grade 8

With greater tensile and yield strength than Grade 5, Grade 8 flange screws are built for high-stress fastening in tough environments. They are widely used in engine components, structural brackets, and load-bearing connections where failure is not an option.

Stainless Steel

This flexible option offers excellent durability and corrosion resistant. Stainless flange screws are used across food processing, medical equipment, outdoor installations, and chemical environments where a clean finish and dependable longevity are both required.

Stainless Steel 18-8

A premium stainless alloy known for its strong corrosion resistance, 18-8 stainless is a great choice for flange screws used in marine, coastal, and wet environments. These screws maintain their appearance and function over time, making them a top pick for visible or outdoor applications.

Flange Screws Available Finishes

South Coast Fasteners offers flange screws in finishes that extend the life of the fastener, protect against corrosion, and support industry-specific requirements.

Black Phosphate and Oil

A dark, matte finish that provides light corrosion resistant while reducing glare and improving lubricity during installation. This finish is often used in automotive assemblies, engine compartments, and industrial machinery where a clean, low-profile look is preferred.

Zinc Cr+3

A bright silver finish that offers dependable rust resistant for general industrial use. Zinc Cr+3 flange screws are popular in equipment assembly, building maintenance, and metal fabrication where both aesthetics and protection matter.

Zinc Yellow Cr+6 Bake

Zinc Yellow CR+6 Bake provides a bright yellow chromate finish with improved corrosion resistant and durability. The baked coating improves adhesion and reduces hydrogen embrittlement, making it good for high-strength fasteners in automotive, construction, and heavy machinery applications.

Frequently Asked Questions

What types of Flange Screws does South Coast Fasteners carry?

We stock Grade 5 Hex HD Serrated Flange Screw, Zinc CR+3; Grade 8 Indented Hex Flange Screw (Frame Bolt), Black Phosphate & Oil; Grade 8 Indented Hex Flange Screw (Frame Bolt), Zinc Yellow CR+6 Bake; Stainless 18-8 Hex Head Serrated Flange Screw with Wax; and Grade 5. Each option is kept in inventory for fast turnaround on common sizes and specifications.

What are Flange Screws used for?

Flange Screws are commonly used across Automotive, Construction, and HVAC for secure, fastening.

Can I order Flange Screws in bulk or request a quote?

Yes. We stock Flange Screws for both small orders and full production runs. Contact us for a quote or help selecting the right product.

Why Choose South Coast Fasteners?

South Coast Fasteners is the destination professionals rely on for fasteners, PPE, industrial supplies, hand tools, cutting tools, and abrasives across a full range of professional and industrial applications. Our team delivers the product expertise and inventory depth needed to keep your procurement on track and your projects on schedule. With competitive pricing and fast shipping, we are your industrial supply partner.

Shop Flange Screws Online at South Coast Fasteners

South Coast Fasteners stocks a full range of materials, grades, and finishes suited for tough applications. The built-in flange beneath the head distributes clamping load across a wider surface area, eliminating the need for a separate washer and providing retention in mechanical assemblies. With competitive pricing and fast shipping, we are your source for flange screw solutions.